Comet surface from Philae lander. Image credit: ESA/Rosetta/Philae/CIVA

The Philae lander had a tough time landing on comet 67P/Churyumov-Gerasimenko – harpoons meant to anchor the lander to the comet surface failed to fire, as well as the small thruster that was to counter-act any rebound from the 1 meter/sec landing.

Philae bounced, twice…

Philae Bounced. Image credit: ESA

It was tense for a while, as communications with the lander were temporarily lost – it was not certain if the lander had drifted away from the comet. Apparently, the lander did indeed bounce 1 km off the surface of the comet, landing 2 hours later – at an as of yet undetermined location on the surface of the comet.

More: http://sen.com/news/one-giant-leap-philae-bounced-1km-off-surface-of-comet
And: http://www.esa.int/spaceinimages/Images/2014/11/Welcome_to_a_comet